The world standard of mass is the kilogram, whose definition is based on the mass of a metal cylinder kept in France.Previously, the standard was based upon the mass of one cubic centimeter of water ...

If you tried to start a car that's been sitting in a garage for decades, you might not expect the engine to respond. But a set of thrusters aboard the Voyager 1 spacecraft successfully fired up ...

Monday’s single-sol plan included a marathon 45-meter drive (about 148 feet), which put us in position for two full sols of ...

When it descends through the thick golden haze on Saturn’s moon Titan, NASA’s Dragonfly rotorcraft will find eerily familiar ...

The star-forming nebula W51 is one of the largest "star factories" in the Milky Way galaxy. "Star factories" like this one can operate for millions of years. The cavernous red region on the right side ...

Breaking Barriers As a woman in science, Nancy Grace Roman was met with skepticism or rejection at nearly every turn. “I was told from the beginning that women could not be scientists,” she often ...